Re: NEC-LIST: Current source in NEC-2

Dear Adam,

According to your letter, you get the right pattern using current
sources, and therefore forcing the input current of each dipole.

If you use voltage sources, the input currents will be different due
to the dipole mutual coupling.

To obtain the correct pattern, you should compute first the admittance
matrix of the array. The matrix entry are the ratio between the input
current of each dipole and a forcing voltage applied to a single
antenna, and therefore can be computed from NEC. By inverting this
matrix you can compute the voltages required to get any given input
current distributions.

I hope that this can solve your problem

Giuseppe Mazzarella

-*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*-
Prof. Giuseppe MAZZARELLA

Dip. Ing. Elettrica Elettronica Univ. di Cagliari
Piazza d'Armi
09123 CAGLIARI ITALY

Ph. + 39 - 070 675 5884 Fax + 39 - 070 675 5900

E-mail Mazzarella_at_diee.unica.it
Received on Thu Sep 24 1998 - 09:58:25 EDT